7 because if u add 4 and 3 that's what u end up with
Answer:
a = -5
Step-by-step explanation:
6a + 20 = 2a
6a = 2a - 20
4a = - 20
a = -5
What does the rest of the problem say?
Answer: 30 percent of 20 is 6.
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Step-by-step explanation:
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(n/100) * 20 = 6 ?
Solve for "n" .
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Divide each side of the equation by "20" :
{ (n/100) * 20 } / 20 = 6 / 20 ;
to get:
n/100 = 6/20 ;
↔ 6/20 = n/100 ; solve for "n" ;
Look at the denominators:
20 * ? = 100 ?
100/ 20 = ? ;
100/20 = 5 ;
So, 20 * " 5" = 100 ;
Then 6* 5 = "n" (for the numerator, "n"; in : "n /100" ) ;
→ 6 * 5 = 30 ;
→ n = 30 .
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Answer: 30 percent of 20 is 6.
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The third one is a point with the first equation.
I had to simplify the second equation.
It simplified to,
The second one with the above is didn't go through so I'd say no solution.
